Q: Why isn't 143 not a prime number?

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143 is not prime. 143 = 11 * 13

No

It is: 11 and 143/11 = 13 wich is also a prime number

The 4 factors of 143 are 1,11,13,143The prime factors of 143 are 11 and 13The prime factorization of 143 is 11x13Thanks buddy.Factors are numbers you can multiply together to get another number.143: 1, 11, 13, 143

11*13=143

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No. 143 has prime factors 11 and 13.

143 is not prime. 143 = 11 * 13

A prime number is a positive integer that has exactly two positive integer factors. 1 and itself.11 x 13 =143 ,so 143 is not a prime number

No

Composite

It is: 11 and 143/11 = 13 wich is also a prime number

Composite

The 4 factors of 143 are 1,11,13,143The prime factors of 143 are 11 and 13The prime factorization of 143 is 11x13Thanks buddy.Factors are numbers you can multiply together to get another number.143: 1, 11, 13, 143

143 is not a prime number. So the question makes no sense.

11*13=143

143 is a composite number because it has more than two factors

Composite.